论文部分内容阅读
针对机动目标拦截问题,设计基于扩张状态观测器的有限时间收敛制导律。首先利用非光滑反馈控制技术,结合有限时间Lyapunov稳定理论,设计了无抖振的滑模制导律。其次为了削弱目标机动对制导精度的影响,设计了一种非齐次干扰观测器,对系统中目标机动带来的总扰动进行有限时间估计,提高了对机动目标的拦截精度。最后,数字仿真验证了这种非光滑连续制导律的有效性。
For the maneuvering target interception problem, a finite time convergence guidance law based on the extended state observer is designed. Firstly, the sliding mode guidance law without chattering is designed by using the non-smooth feedback control technique and the finite-time Lyapunov stability theory. Secondly, in order to weaken the impact of target maneuver on guidance accuracy, a non-homogeneous disturbance observer is designed to estimate the total disturbance caused by target maneuver in the system for a limited time and improve the interception accuracy of maneuvering target. Finally, numerical simulations verify the validity of this nonsmooth continuous guidance law.